Just a piece of advice
I own a lawn care business, we've been in business for over 20 years. Landscape design is a fun business, I have a lot of business partners that are in that line of work. I understand where you're coming from with your frustrations about landscape design. I don't have much expertise in that realm of lawn care.
I do, however, believe in being organized and that leads to the most success in the lawn care business.